#include <sys/types.h>
#include <sys/wait.h>
#include "ourhdr.h"

int main(void) {
    char buf[MAXLINE];
    pid_t pid;
    int status;
    
    printf("%% ");
    while (fgets(buf, MAXLINE, stdin) != NULL) {
        buf[strlen(buf) - 1]= 0; 
        if ((pid= fork()) < 0)
            err_sys("fork error");
        else if (pid == 0) {  // /* child */
            execlp(buf, buf, (char *) 0);
            err_ret("couldn't execute: %s", buf);
            exit(127);
        }                      

        /* parent */
        if ((pid = waitpid(pid, &status, 0)) < 0)
            err_sys("waitpid error");
        printf("%% ");
    }
    exit(0);
}
